87109domain: NAppears in sequencesNumber of (n+1) X (2+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order.at n=10A231338Expansion of e.g.f. Product_{k>=1} 1 / (1 - sinh(x^k)).at n=7A330515